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[Octave-bug-tracker] [bug #36460] setting of ghostscript TextAlphaBits a
From: |
John Hunt |
Subject: |
[Octave-bug-tracker] [bug #36460] setting of ghostscript TextAlphaBits and GraphicsAlphaBits |
Date: |
Sun, 13 May 2012 13:19:34 +0000 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:11.0) Gecko/20100101 Firefox/11.0 |
URL:
<http://savannah.gnu.org/bugs/?36460>
Summary: setting of ghostscript TextAlphaBits and
GraphicsAlphaBits
Project: GNU Octave
Submitted by: huntj
Submitted on: Sun 13 May 2012 01:19:34 PM GMT
Category: Plotting
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Feature Request
Status: None
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 3.6.1
Operating System: GNU/Linux
_______________________________________________________
Details:
The patch attached allows to set the TextAlphaBits and GraphicsAlphaBits
options sent to ghostscript for bitmap output
(tested with png).
This allows to workaround an antialiasing bug in ghostscript (9.05), which
makes thin white lines appear in surface plots (pcolor or surf) with shading
interp.
The solution is then to disable antialiasing for graphics :
print --GraphicsAlphaBits=1 try.png
Text antialiasing can also be turned off :
print --TextAlphaBits=1 --GraphicsAlphaBits=1 try.png
The default are --GraphicsAlphaBits=4 and --TextAlphaBits=4
Could it be included in octave ? should it be documented ?
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Sun 13 May 2012 01:19:34 PM GMT Name: antialiasing.patch Size: 2kB
By: huntj
<http://savannah.gnu.org/bugs/download.php?file_id=25852>
_______________________________________________________
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